【明報專訊】It was time for this year's fledglings to learn to fly and prepare for the great annual migration. The sky was soon swarming（成群地飛）with young birds trying out their wings. Some made slow but steady progress, flying first from branch to branch, then tree to tree, and finally from one part of the forest to another. The more reckless ones threw caution to the winds, diving and swooping like daredevil pilots.